Diagnostic Procedure

WARNING: This page is about a different car, the 2012 Mitsubishi Lancer. However, it is still accessible from the selected car via links, so may be relevant.

STEP 1. Replace the battery in the keyless operation key and recheck the diagnostic trouble code.
Replace the battery of the keyless operation key for which the DTC is set, and check whether the DTC is reset.
1. Replace the battery of the keyless operation key for which the DTC is set.
2. Erase the DTC.
3. Turn the ignition switch from the LOCK (OFF) position to the ON position.
4. Lock or unlock the keyless operation key.
5. Check if the DTC is set.
  Q: Is the DTC set?
  1. YES: Go to Step 2.
  2. NO: The diagnosis is complete (Discharged battery).
STEP 2. Replace the keyless operation key and recheck the diagnostic trouble code.
Replace the keyless operation key for which the DTC is set with a new one, register the key ID and keyless operation key ID (refer to ID CODES REGISTRATION PROCEDURES ), and check whether the DTC is reset.
1. Erase the DTC.
2. Turn the ignition switch from the LOCK (OFF) position to the ON position.
3. Check if the DTC is set.
  Q: Is the DTC set?
  1. YES: Replace KOS-ECU and register the ID codes (Refer to ID CODES REGISTRATION JUDGMENT TABLE ).
  2. NO: The diagnosis is complete.